2 problems

For a scheme, its étale fundamental group is the profinite group encoding its finite étale coverings. Grothendieck's group-scheme enhancement conjecture. The étale fundamental grou…

Let $X^{et}$ be the étale site from Example, let $A$ be an abelian group, and let ${\Greekmath 0119}_n^{et}(X)$ and $H_n^{et}(X,A)$ denote étale pro-homotopy and étale pro-homology…